20420500

素因数分解:

$2^2\times 5^3\times {\mathrm{40841}}^1$

素因数の和:40860

約数の個数: 24

約数和(自身を含む): 44599464

約数和(自身を除く): 24178964

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 40841, 81682, 163364, 204205, 408410, 816820, 1021025, 2042050, 4084100, 5105125, 10210250, 20420500]

約数ペア:

[(1, 20420500), (2, 10210250), (4, 5105125), (5, 4084100), (10, 2042050), (20, 1021025), (25, 816820), (50, 408410), (100, 204205), (125, 163364), (250, 81682), (500, 40841)]